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PATEN'TBD SEPT. 16, 1862.

c; MCINTIRB.

GULVERT.

UNITED STATES PATENT OFFICE.

CHARLES MCINTIRE, OE EASTON, PENNSYLVANIA.

CULVERT.

Specification of Letters Patent No. 36,472, dated September 16, 1862.

T o all whom it may concern:

Be it known that I, CHARLES MGINTIRE, of Easton, in the county ofNorthampton, in the State of Pennsylvania, have invented a new andImproved Mode of Constructing Culverts in Marshes, Creeks, and Quicksandby Dispensing with the Use of Coffer- Dams and Cradling; and I do herebydeclare that the following is a full and eXact description thereof,reference being had to the accompanying drawings and to the letters ofreference marked thereon.

The nature of my invention consists in the suspension of iron, Or ironand other materials, to form the bottom section of the culvert;reference being had to the annexed drawings, making a part of thisspecification in which- Figure l, is a perspective View; Fig. 2 alongitudinal elevation, Fig. 3 a transverse section. l

To enable others skilled in the art tO construct and use my invention, Iwill proceed to describe its construction and operation; but in order tOdispense with the use Of the coffer dam and cradling.

I construct my culvert in any of the known forms, by a row of pilesdriven at each side of the culvert and at any distance apart tO secure aproper foundation; the piles to be cut oft' at the required height tosuit the grade, and a string piece secured on the top of the piles, asshown at D in the acprojecting flange from each side of the culvertresting on the string and secured theretO with bolts, and which formsthe abutment for the upper arch of brick or stone for the top section,as shown at B and C in the accompanying drawings. The lower section (orarch) of the culvert being properly secured to the string. I thenproceed to fill around the lower section of the structure with dirt, andthe water will pass through it and it will not prevent the workmen whilethey are proceeding to build the top arch of the culvert in the usualmethod of culvert work, consisting of brick or stone.

I claim- In the construction of culverts to be used in water andquicksands-the combination of the upper arch, of brick, or stone, withthe lower arch of iron when the latter is constructed with the flanges Band C, the flange B being constructed to suspend the lower arch, uponpiles, stringers or their equivalent, and the flange C as a base supportfor the upper arch of brick or stone in the manner and for thepurposeherein described.-

CHARLES MOINTIRE. Witnesses:

A. E. BROWN, S. MOORE.

